POWER PLANT OPERATING ON FUEL ELEMENTS Russian patent published in 2012 - IPC H01M8/04 

FIELD: power industry.

SUBSTANCE: terminals are introduced to power plant to connect external electric network, network stress sensor, rectifier bridge with electrolytic capacitor, contactor and switching element. At small quantity of additional elements there provided is conversion of independent power plant to uninterrupted power supply with generator on fuel elements used as reserve power supply.

EFFECT: abrupt increase in UPS operation duration in comparison to known ones which use only storage batteries as a reserve source.